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Merck
CN

93100

Triphenylphosphine oxide

purum, ≥98.0% (HPLC)

Synonym(s):

Ph3PO, TPPO, Triphenyl phosphorus oxide, Triphenylphosphine monoxide

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About This Item

Linear Formula:
(C6H5)3PO
CAS Number:
791-28-6
Molecular Weight:
278.28
EC Number:
212-338-8
UNSPSC Code:
12350000
PubChem Substance ID:
24889795
Beilstein/REAXYS Number:
745854
MDL number:
MFCD00002080

Key Documents

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grade

purum

assay

≥98.0% (HPLC)

mp

150-157 °C (lit.), 152-158 °C

solubility

methanol: 25 mg/mL, clear

SMILES string

O=P(c1ccccc1)(c2ccccc2)c3ccccc3

InChI

1S/C18H15OP/c19-20(16-10-4-1-5-11-16,17-12-6-2-7-13-17)18-14-8-3-9-15-18/h1-15H

InChI key

FIQMHBFVRAXMOP-UHFFFAOYSA-N

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pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302,H412

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

356.0 °F

flash_point_c

180 °C

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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P W Baures et al.
Acta crystallographica. Section C, Crystal structure communications, 46 ( Pt 4), 715-717 (1990-04-15)
C18H15OP.1/2H2O, Mr = 287.30, orthorhombic, Fdd2, a = 19.794 (18), b = 32.540 (12), c = 9.459 (6) A, V = 6092.5 (22) A3, Z = 16, Dx = 1.253 g cm-3, lambda(Mo K alpha) = 0.71073 A, mu =
Acute toxicity to the golden apple snail and estimated bioconcentration potential of triphenylphosphine oxide and series of related compounds.
C C Lo et al.
Bulletin of environmental contamination and toxicology, 65(1), 104-111 (2000-06-30)
Y M Ahn et al.
Organic letters, 3(9), 1411-1413 (2001-05-12)
[reaction in text] An efficient method for removing ruthenium byproducts generated during olefin metathesis reactions with Grubbs catalysts is described. Treatment of the crude reaction products with triphenylphosphine oxide or dimethyl sulfoxide, followed by filtration through silica gel, was found
Steven Kealey et al.
Dalton transactions (Cambridge, England : 2003), (42)(42), 4763-4765 (2007-10-24)
A new tetrakis(pyrazolyl)borate ligand bearing triphenylphosphine oxide moieties appended to the 3-position of the pyrazolyl rings is reported and shown to display varied coordination chemistry from tridentate N(2)O coordination with thallium to hexadentate N(3)O(3) coordination with europium.
R Kyle Palmer et al.
Assay and drug development technologies, 8(6), 703-713 (2010-12-17)
Transient receptor potential melastatin-5 (TRPM5) is a calcium-gated monovalent cation channel expressed in highly specialized cells of the taste bud and gastrointestinal tract, as well as in pancreatic β-cells. Well established as a critical signaling protein for G protein-coupled receptor-mediated
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